find the 31st term of an ap whose 11 term is 38 and 16 term is 73
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a+10d=38 and a+15d=73 then solve a and d and then use equation a+30d put in it value of a and d
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a+10d=38a+15d=73change the signs-5d=-35d=7putting value of d in any eqa+10*7=38a+70=38a=38-70=-32
31st term=a+30d-32+30*7=-32+210178
31st term=a+30d-32+30*7=-32+210178
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